Homemade silencer legal?

I know it is illegal to fabricate a fully automatic firearm, but what are the legalities of fabricating your own silencer? Do you need to have an FFL to do it, or can you apply for a tax stamp and build one?

Like far too many you do not indicate your state of residence. Some communist states do not allow silencers. The Form 1 requires the same stuff as a Form 4, namely a CLEO signature, picture, fingerprints, one time $200 tax.

Of course, if your CLEO is clueless and won't sign you can form a corporation and file your forms anyway. It avoids need for Pics, signature and FP cards. Any officers of the corp can then possess the item, say your wife or adult children. If the corp is sold, the NFA items go with it but do not need a tax paid transfer to do so as long as the corp name is retained.

DO NOT build the item or any part of it prior to getting the approved form 1 back!!!!!! Be sure to keep copies of the approved form 1 in a safe place OTHER than with the NFA item!!!!!!!!